SAX是一种事件驱动的XMLAPI，特点：

流的方式处理，遇到标签的时候不会记下标签

分析能即刻开始，并可随时结束

所占内存小，适合大型文档

示例xml文件如下：

<?xml version="1.0" encoding="utf-8"?>
<persons>
    <person name="Claw" age="24">
        <weight>70kg</weight>
        <height>173cm</height>
    </person>
    <person name="Nancy" age="25">
        <weight>54kg</weight>
        <height>172cm</height>
    </person>
    <person name="dearcloud" age="27">
        <weight>55kg</weight>
        <height>172cm</height>
    </person>
</persons>

使用方法：扩展defaultHandler实现解析细节，重写主要的五个方法，实例代码如下：

package com.example.xmlparser;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
import org.xml.sax.helpers.DefaultHandler;

public class SaxHandler extends DefaultHandler {

	HashMap<String,String> map;
	List<Map<String,String>> list;
	private String curTag;//当前标签
	private String curValue;//当前值
	private String nodeName;//当前节点名
	
	public SaxHandler(String node) {
		nodeName=node;
	}

	public List<Map<String,String>> getList() {
		return list;
	}

	@Override
	public void startDocument() throws SAXException {
		list=new ArrayList<Map<String,String>>();
		super.startDocument();
	}
	
	@Override
	public void startElement(String uri,String localName,String qName,Attributes attributes) throws SAXException {
		if(qName.equals(nodeName))
			map=new HashMap<String,String>();
		if(attributes!=null&&map!=null)
			for(int i=0;i<attributes.getLength();i++){
				map.put(attributes.getQName(i),attributes.getValue(i));
			}
		curTag=qName;
		super.startElement(uri,localName,qName,attributes);
	}
	
	@Override
	public void characters(char[] ch,int start,int length)
			throws SAXException {
		if(curTag!=null&&map!=null){
			curValue=new String(ch,start,length);
			if(curValue!=null&&!curValue.trim().equals("")){
				map.put(curTag,curValue);
			}
		}
		super.characters(ch,length);
	}
	
	@Override
	public void endElement(String uri,String qName)
			throws SAXException {
		if(nodeName.equals(qName))
			list.add(map);
		super.endElement(uri,qName);
	}
	
	@Override
	public void endDocument() throws SAXException {
		super.endDocument();
	}
	
}

有了这个DefaultHandler就可以解析了，解析类的静态方法如下：

public static List<Map<String,String>> parseSax(InputStream is,String node){
		try {
			SAXParserFactory saxPF=SAXParserFactory.newInstance();
			SAXParser saxParser=saxPF.newSAXParser();
			SaxHandler saxHandler=new SaxHandler(node);
			saxParser.parse(is,saxHandler);
			return saxHandler.getList();
		} catch (Exception e) {
			Log.e("parse error",e.getMessage()+e.getLocalizedMessage());
			return null;
		}finally{
			try {
				is.close();
			} catch (IOException e) {
				e.printStackTrace();
			}
			
		}
		
	}

String nodeName="person";
		InputStream is=getResources().openRawResource(R.raw.parsed);
		List<Map<String,String>> list=ParserUtil.parseSax(is,nodeName);